Ma Iron oxides Amagwiritsidwa Ntchito Pazopaka Zotentha Kwambiri

Standard yellow iron oxides ndi abwino inorganic pigments kukhala osiyanasiyana mtundu mithunzi chifukwa cha ubwino wa ntchito ndi mtengo woperekedwa ndi mphamvu zawo zobisala zapamwamba ndi kuwala, nyengo yabwino kwambiri, kuwala ndi kufulumira kwa mankhwala, ndi kuchepetsa mtengo. Koma kugwiritsidwa ntchito kwawo muzopaka zotentha kwambiri monga zokutira, zokutira za ufa kapena stoving utoto ndi ochepa. Chifukwa chiyani?

Pamene ma oxides achikasu achikasu amaperekedwa kutentha kwambiri, mawonekedwe awo a goethite (FeOOH) amawononga madzi ndipo pang'ono amasanduka hematite (Fe2O3), yomwe ndi mawonekedwe a kristalo a red iron oxide. Ichi ndichifukwa chake mulingo wa iron oxide wokhazikika womwe umakhalapo musanachiritsidwe umakhala woderapo komanso wofiirira.

Kusintha kumeneku kutha kuchitika kuchokera ku kutentha komwe kumafika ku 160ºC, kutengera nthawi yochiritsa, makina omangira komanso mapangidwe ake enieni.